Ah yes, the firewall. A creature whose protectiveness is matched only by its natural capriciousness. It is possible for firewalls (especially network firewalls) to interfere with the accessibility and functionality of our website on your browser. Try switching your firewall off or whitelisting our site if you’re having trouble. If it’s your company firewall that’s causing trouble, you might have to switch to a private computer on a private network.

If you’re experiencing log in issues, please visit our support page to troubleshoot. If that doesn’t work, feel free to send us a message and we’ll make sure you can get to studying as soon as possible.

This depends on the course. Some courses have an end exam that you can re-try as many times as you need, and others have a fixed limit of re-tries, such as the Lean Six Sigma Yellow Belt course, which can be taken three times before being locked.

You can pay for your courses by PayPal, iDeal, VISA, Mastercard and American Express. Our payment services are provided by Alphacomm Solutions. Your transaction will appear on your bill as ALPHACOMM SOLUTIONS BV.We do not accept cryptocurrency or conflict diamonds.

To buy a course, please visit the corresponding product page and click the ‘Add to basket’ button. A pop-up will appear, asking you whether you’d like to make a single purchase or purchase multiple licenses.